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Synthesis and Photoluminescence Properties of Eu3+‐Activated Ba2Cd(BO3)2 Red‐Emitting Phosphors for Near‐Ultraviolet Excited White Light‐Emitting Diodes

Year: 2025

Type: article

Abstract: ABSTRACT A new class of rare‐earth doped borate phosphors, Ba2Cd(BO3)2: xEu3+ (x = 2, 3, 4, 5, and 6 mol%), was synthesized using the high‐temperature solid‐state reaction technique in air. X‐ray diffraction (XRD) confirmed the phase formation of Ba2Cd(BO3)2, while Fourier transform infrared spectroscopy (FT‐IR) revealed the presence of trigonal [BO3] units. The surface morphology was studied using field emission scanning electron microscopy (FE‐SEM), and energy dispersive spectroscopy (EDS) identified the elements. Photoluminescence (PL) analysis showed that the phosphors emitted at 592, 613, 652, and 701 nm, corresponding to the 5D0 → 7F1, 5D0 → 7F2, 5D0 → 7F3, and 5D0 → 7F4 transition of Eu3+ ions, respectively. The 613 nm red emission, from the 5D0 → 7F2 transition, was strongest for the 6 mol% Eu3+ sample. The emission intensity increased with Eu3+ concentration, peaking at 6 mol%. CIE chromaticity, correlated color temperature (CCT), and color purity calculations showed acceptable color coordinates (0.6426 and 0.3548), a low CCT value (2355 K), and high purity (91.34%), making the 6 mol% Eu3+‐doped phosphor ideal for red light in white light‐emitting diodes (WLEDs).

Source: Luminescence

DOI: 10.1002/bio.70135

Authors: S. B. Töreli, V. E. Kafadar, F. M. Emen, E. Öztürk, R. Altınkaya

Institutions: Adana Science and Technology University, Gaziantep University, Burdur Mehmet Akif Ersoy Üniversitesi, Karamanoğlu Mehmetbey University, Hacettepe University

Language: English

Topic: Luminescence Properties of Advanced Materials

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

Estimated APC paid: $3,350

Funder: Gaziantep Üniversitesi